All women

(n = 55)

odds ratio

95% CI

p-value

Age

1.02

0.90 - 1.14

0.751

Body mass index

1.02

0.87 - 1.20

0.773

Body weight of newborn infant

1.00

0.99 - 1.00

0.958

Menstrual pain

0.99

0.26 - 3.73

0.990

Presence of LBPP before pregnacy

2.33

0.71 - 7.63

0.160

Multiparous women

(n = 32)

odds ratio

95% CI

p-value

Age

1.11

0.78 - 1.57

0.557

Body mass index

1.04

0.86 - 1.25

0.658

Body weight of newborn infant

1.00

0.99 - 1.00

0.403

Menstrual pain

1.20

0.15 - 9.53

0.862

Presence of LBPP before pregnacy

1.26

0.16 - 9.69

0.821

Past history of LBPP in previous pregnancy

7.68

1.15 - 50.98

0.035